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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9125.1-2020 |
Fasteners for steel pipe flange joints—Part 1:PN designated 钢制管法兰连接用紧固件 第1部分：PN系列 |
China National Standards joints—Part |
 English PDF |
| GB/T 9125.2-2020 |
Fasteners for steel pipe flange joints—Part 2：Class designated 钢制管法兰连接用紧固件 第2部分：Class系列 |
China National Standards joints—Part |
English PDF |
| GB/T 17186.2-2018 |
Calculation methods for the pipe flange joints—Part 2：Calculation method satisfies leakage rate 管法兰连接计算方法 第2部分：基于泄漏率的计算方法 |
China National Standards joints—Part |
English PDF |
| GB/T 17186.1-2015 |
Calculation methods for the pipe flange joints—Part 1： Calculation method satisfies both strength and rigidity requirements 管法兰连接计算方法 第1部分：基于强度和刚度的计算方法 |
China National Standards joints—Part |
English PDF |
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